#1A377E#1A377E

#1A377E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.126 H 264.2°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#1A377E
RGB	rgb(26, 55, 126)
HSL	hsl(223, 66%, 30%)
HSV	hsv(223, 79%, 49%)
CMYK	cmyk(79.4%, 56.3%, 0%, 50.6%)
CIE-LAB	lab(25.13, 16.77, -43.34)
CIE-LCH	lch(25.13, 46.48, 291.15°)
OKLab	oklab(36.06% -0.0126 -0.1249)
OKLCH	oklch(36.06% 0.126 264.2)
XYZ	xyz(5.5567, 4.4577, 20.3022)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A377E #7E611A

analogous

#1A697E #1A377E #2F1A7E

triadic

#1A377E #7E1A37 #377E1A

tetradic

#1A377E #7E1A69 #7E611A #1A7E2F

square

#1A377E #7E1A69 #7E611A #1A7E2F

split-complementary

#1A377E #7E2F1A #697E1A

monochromatic

#050B19 #10214B #1A377E #244DB1 #3C69D7

Accessibility & contrast

On white

11.10

#1A377E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1A377E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A377E

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A377E	#FFFFFF	#000000	##FFFFFF
##1A377E	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004080

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a377e;
/* rgb */ color: rgb(26, 55, 126);
/* oklch */ color: oklch(36.1% 0.126 264.2);

Tailwind

colors: {
  custom: {
    50: '#676da4',
    500: '#1a377e',
    950: '#000000',
  },
}

SCSS

$custom: #1a377e;
$custom-light: #676da4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a377e",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 126
  },
  "hsl": {
    "h": 222.6,
    "s": 65.789,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36056,
    "c": 0.12558,
    "h": 264.2
  },
  "luminance": 0.04458
}

Semantic roles & 50–950 ramp

primary

#1A377E

secondary

#B29142

accent

#B83FE9

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A377E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →